/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

module.exports = [
  '$q',
  '$window',
  function($q, $window) {
    return function(files) {
      return $q.all(Array.prototype.map.call(files, readFile));
    };

    function readFile(file) {
      var deferred = $q.defer();

      var reader = new $window.FileReader();

      reader.onload = function(e) {
        deferred.resolve({
          file: file,
          content: e.target.result
        });
      };

      reader.onerror = function(error) {
        deferred.reject(error);
      };

      reader.readAsText(file);

      return deferred.promise;
    }
  }
];
